Silverfin false 13 May 2026 13 May 2026 Louise Smith CA Hall Morrice LLP 3,882,701 758,302 false true 31/12/2025 01/01/2025 31/12/2025 Phiboon Buakhunngamcharoen 01/10/2021 Scott Cormack 28/09/2021 Chalermchai Mahagitsiri 07/02/2020 Abrar Ahmad Sial 01/10/2021 Paul Whiley 01/10/2021 13 May 2026 The principal activity of the company continued to be that of the provision of subsea engineering services. SC653829 2025-12-31 SC653829 bus:Director1 2025-12-31 SC653829 bus:Director2 2025-12-31 SC653829 bus:Director3 2025-12-31 SC653829 bus:Director4 2025-12-31 SC653829 bus:Director5 2025-12-31 SC653829 2024-12-31 SC653829 core:CurrentFinancialInstruments 2025-12-31 SC653829 core:CurrentFinancialInstruments 2024-12-31 SC653829 core:ShareCapital 2025-12-31 SC653829 core:ShareCapital 2024-12-31 SC653829 core:RetainedEarningsAccumulatedLosses 2025-12-31 SC653829 core:RetainedEarningsAccumulatedLosses 2024-12-31 SC653829 core:OtherPropertyPlantEquipment 2024-12-31 SC653829 core:OtherPropertyPlantEquipment 2025-12-31 SC653829 bus:OrdinaryShareClass1 2025-12-31 SC653829 2025-01-01 2025-12-31 SC653829 bus:FilletedAccounts 2025-01-01 2025-12-31 SC653829 bus:SmallEntities 2025-01-01 2025-12-31 SC653829 bus:Audited 2025-01-01 2025-12-31 SC653829 2024-01-01 2024-12-31 SC653829 bus:PrivateLimitedCompanyLtd 2025-01-01 2025-12-31 SC653829 bus:Director1 2025-01-01 2025-12-31 SC653829 bus:Director2 2025-01-01 2025-12-31 SC653829 bus:Director3 2025-01-01 2025-12-31 SC653829 bus:Director4 2025-01-01 2025-12-31 SC653829 bus:Director5 2025-01-01 2025-12-31 SC653829 core:OtherPropertyPlantEquipment core:BottomRangeValue 2025-01-01 2025-12-31 SC653829 core:OtherPropertyPlantEquipment core:TopRangeValue 2025-01-01 2025-12-31 SC653829 core:OtherPropertyPlantEquipment 2025-01-01 2025-12-31 SC653829 bus:OrdinaryShareClass1 2025-01-01 2025-12-31 SC653829 bus:OrdinaryShareClass1 2024-01-01 2024-12-31 SC653829 1 2025-01-01 2025-12-31 iso4217:GBP xbrli:pure xbrli:shares

Company No: SC653829 (Scotland)

MERMAID SUBSEA SERVICES (UK) LIMITED

Financial Statements
For the financial year ended 31 December 2025
Pages for filing with the registrar

MERMAID SUBSEA SERVICES (UK) LIMITED

Financial Statements

For the financial year ended 31 December 2025

Contents

MERMAID SUBSEA SERVICES (UK) LIMITED

BALANCE SHEET

As at 31 December 2025
MERMAID SUBSEA SERVICES (UK) LIMITED

BALANCE SHEET (continued)

As at 31 December 2025
Note 2025 2024
£ £
Fixed assets
Tangible assets 4 23,493 35,355
23,493 35,355
Current assets
Debtors 5 2,265,078 2,584,856
Cash at bank and in hand 973,757 1,275,765
3,238,835 3,860,621
Creditors: amounts falling due within one year 6 ( 2,090,456) ( 6,606,805)
Net current assets/(liabilities) 1,148,379 (2,746,184)
Total assets less current liabilities 1,171,872 (2,710,829)
Net assets/(liabilities) 1,171,872 ( 2,710,829)
Capital and reserves
Called-up share capital 7 100,000 100,000
Profit and loss account 1,071,872 ( 2,810,829 )
Total shareholder's funds/(deficit) 1,171,872 ( 2,710,829)

The financial statements have been prepared and delivered in accordance with the provisions applicable to companies subject to the small companies regime and a copy of the Profit and Loss Account has not been delivered.

The financial statements of Mermaid Subsea Services (UK) Limited (registered number: SC653829) were approved and authorised for issue by the Board of Directors on 13 May 2026. They were signed on its behalf by:

Abrar Ahmad Sial
Director
MERMAID SUBSEA SERVICES (UK) LIMITED

NOTES TO THE FINANCIAL STATEMENTS

For the financial year ended 31 December 2025
MERMAID SUBSEA SERVICES (UK) LIMITED

NOTES TO THE FINANCIAL STATEMENTS

For the financial year ended 31 December 2025
1. Accounting policies

The principal accounting policies are summarised below. They have all been applied consistently throughout the financial year and to the preceding financial year, unless otherwise stated.

General information and basis of accounting

Mermaid Subsea Services (UK) Limited (the Company) is a private company, limited by shares, incorporated in the United Kingdom under the Companies Act 2006 and is registered in Scotland. The address of the company's registered office is Pavilion 11, Kingshill Park, Venture Drive, Westhill, AB32 6FL, Scotland, United Kingdom.

Mermaid Subsea Services (UK) Limited are a wholly owned subsidiary of Mermaid Subsea Services (Thailand) Limited and the results of Mermaid Subsea Services (UK) Limited are included in the consolidated accounts of Mermaid Maritime Plc, a company incorporated in Singapore.

The financial statements are presented in pounds sterling which is the functional currency of the Company and rounded to the nearest £.

The financial statements have been prepared under the historical cost convention, modified to include certain items at fair value, and in accordance with Section 1A of Financial Reporting Standard 102 (FRS 102) ‘The Financial Reporting Standard applicable in the UK and Republic of Ireland’ issued by the Financial Reporting Council and the requirements of the Companies Act 2006 as applicable to companies subject to the small companies regime.

Going concern

The directors have assessed the company's cash flows and working capital requirements for at least 12 months from the date of approval of these financial statements. Based on this assessment, the directors consider the company has sufficient resources to continue in operational existence for that period and the financial statements have been prepared on the going concern basis.

Foreign currency

Transactions in foreign currencies are recorded at the rate of exchange at the date of the transaction. Monetary assets and liabilities denominated in foreign currencies at the Balance Sheet date are reported at the rates of exchange prevailing at that date.

Exchange differences are recognised in the Profit and Loss Account in the period in which they arise except for exchange differences arising on gains or losses on non-monetary items which are recognised in the Statement of Comprehensive Income.

Turnover

Turnover is recognised at the fair value of the consideration received or receivable for goods and services provided in the normal course of business, and is shown net of VAT and other sales related taxes. The fair value of consideration takes into account trade discounts, settlement discounts and volume rebates.

Turnover is recognised when the significant risks and rewards are considered to have been transferred to the customer.

Revenue from contracts for the provision of professional services is recognised by reference to the stage of completion when the stage of completion, costs incurred and costs to complete can be estimated reliably. The stage of completion is calculated by comparing costs incurred, mainly in relation to contractual hourly staff rates and materials, as a proportion of total costs. Where the outcome cannot be estimated reliably, revenue is recognised only to the extent of the expenses recognised that it is probable will be recovered.

Employee benefits

Short term benefits
The cost of any unused holiday entitlement is recognised in the period in which the employee’s services are received.

Termination benefits are recognised as an expense when the company is demonstrably committed to terminate the employment of an employee or to provide termination benefits.

Defined contribution schemes
The company operates a defined contribution scheme. The amount charged to the Profit and Loss Account in respect of pension costs and other post-retirement benefits is the contributions payable in the financial year. Differences between contributions payable in the financial year and contributions actually paid are included as either accruals or prepayments in the Balance Sheet.

Taxation

Current tax
The tax currently payable is based on taxable profit for the year. Taxable profit differs from net profit as reported in the profit and loss account because it excludes items of income or expense that are taxable or deductible in other years and it further excludes items that are never taxable or deductible. The company’s liability for current tax is calculated using tax rates that have been enacted or substantively enacted by the reporting end date.

Deferred tax
Deferred tax liabilities are generally recognised for all timing differences and deferred tax assets are recognised to the extent that it is probable that they will be recovered against the reversal of deferred tax liabilities or other future taxable profits. Such assets and liabilities are not recognised if the timing difference arises from goodwill or from the initial recognition of other assets and liabilities in a transaction that affects neither the tax profit nor the accounting profit.

The carrying amount of deferred tax assets is reviewed at each reporting end date and reduced to the extent that it is no longer probable that sufficient taxable profits will be available to allow all or part of the asset to be recovered. Deferred tax is calculated at the tax rates that are expected to apply in the period when the liability is settled or the asset is realised. Deferred tax is charged or credited in the profit and loss account, except when it relates to items charged or credited directly to equity, in which case the deferred tax is also dealt with in equity. Deferred tax assets and liabilities are offset when the company has a legally enforceable right to offset current tax assets and liabilities and the deferred tax assets and liabilities relate to taxes levied by the same tax authority.

Tangible fixed assets

Tangible fixed assets are stated at cost or valuation, net of depreciation and any provision for impairment. Depreciation is provided on all tangible fixed assets, other than investment property and freehold land, at rates calculated to write off the cost or valuation, less estimated residual value, of each asset on a straight-line or reducing balance basis over its expected useful life, as follows:

Plant and machinery etc. 2 - 3 years straight line

The gain or loss arising on the disposal of an asset is determined as the difference between the sale proceeds and the carrying value of the asset, and is credited or charged to profit or loss.

Leases

The company as lessee
Rentals under operating leases are charged on a straight-line basis over the lease term, even if the payments are not made on such a basis. Benefits received and receivable as an incentive to sign an operating lease are similarly spread on a straight-line basis over the lease term.

Impairment of assets

Assets, other than those measured at fair value, are assessed for indicators of impairment at each Balance Sheet date. If there is objective evidence of impairment, an impairment loss is recognised in the Profit and Loss Account as described below.

Non-financial assets
At each balance sheet date, the company reviews its tangible and intangible assets to determine whether there is any indication that those assets have suffered an impairment loss.

If any such indication exists, the recoverable amount of the asset is estimated in order to determine the extent of the impairment loss (if any). The recoverable amount of an asset is the higher of its fair value less costs to sell and its value in use. In assessing value in use, the estimated future cash flows are discounted to their present value using a pre-tax discount rate that reflects current market assessments of the time value of money and the risks specific to the asset for which the estimates of future cash flows have not been adjusted.

Where it is not possible to estimate the recoverable amount of an individual asset, the company estimates the recoverable amount of the cash-generating unit to which the asset belongs. An impairment loss is recognised immediately in profit or loss, unless the relevant asset is carried at a revalued amount, in which case the impairment loss is treated as a revaluation decrease.

Recognised impairment losses are reversed if, and only if, the reasons for the impairment loss have ceased to apply. Where an impairment loss subsequently reverses, the carrying amount of the asset (or cash-generating unit) is increased to the revised estimate of its recoverable amount, but so that the increased carrying amount does not exceed the carrying amount that would have been determined had no impairment loss been recognised for the asset (or cash-generating unit) in prior years. A reversal of an impairment loss is recognised immediately in profit or loss, unless the relevant asset is carried at a revalued amount, in which case the reversal of the impairment loss is treated as a revaluation increase.

Financial assets
An asset is impaired where there is objective evidence that, as a result of one or more events that occurred after initial recognition, the estimated recoverable value of the asset has been reduced. The recoverable amount of an asset is the higher of its fair value less costs to sell and its value in use.

Where indicators exist for a decrease in impairment loss, the prior impairment loss is tested to determine reversal. An impairment loss is reversed on an individual impaired asset to the extent that the revised recoverable value does not lead to a revised carrying amount higher than the carrying value had no impairment been recognised.

For financial assets carried at amortised cost, the amount of impairment is the difference between the asset’s carrying amount and the present value of estimated future cash flows, discounted at the financial asset’s original effective interest rate.

For financial assets carried at cost less impairment, the impairment loss is the difference between the asset’s carrying amount and the best estimate of the amount that would be received for the asset if it were to be sold at the reporting date.

Where indicators exist for a decrease in impairment loss, and the decrease can be related objectively to an event occurring after the impairment was recognised, the prior impairment loss is tested to determine reversal. An impairment loss is reversed on an individual impaired financial asset to the extent that the revised recoverable value does not lead to a revised carrying amount higher than the carrying value had no impairment been recognised.

Cash and cash equivalents

Cash and cash equivalents are basic financial assets and include cash in hand, deposits held at call with banks, other short-term liquid investments with original maturities of three months or less, and bank overdrafts. Bank overdrafts are shown within borrowings in creditors: amounts falling due within one year.

Financial instruments

Financial assets and financial liabilities are recognised when the Company becomes a party to the contractual provisions of the instrument.

Financial liabilities and equity instruments are classified according to the substance of the contractual arrangements entered into. An equity instrument is any contract that evidences a residual interest in the assets of the Company after deducting all of its liabilities.

Financial assets and liabilities are only offset in the Balance Sheet when, and only when there exists a legally enforceable right to set off the recognised amounts and the Company intends either to settle on a net basis, or to realise the asset and settle the liability simultaneously.

Basic financial assets
Basic financial assets, which include debtors and cash and bank balances, are initially measured at transaction price including transaction costs and are subsequently carried at amortised cost using the effective interest method unless the arrangement constitutes a financing transaction, where the transaction is measured at the present value of the future receipts discounted at a market rate of interest. Financial assets classified as receivable within one year are not amortised.

Financial assets are derecognised when and only when the contractual rights to the cash flows from the financial asset expire or are settled, or the Company transfers to another party substantially all of the risks and rewards of ownership of the financial asset, or the Company, despite having retained some, but not all, significant risks and rewards of ownership, has transferred control of the asset to another party.

Basic financial liabilities
Basic financial liabilities, including creditors, bank loans, loans from fellow group companies and preference shares that are classified as debt, are initially recognised at transaction price unless the arrangement constitutes a financing transaction, where the debt instrument is measured at the present value of the future payments discounted at a market rate of interest. Financial liabilities classified as payable within one year are not amortised.

Debt instruments are subsequently carried at amortised cost, using the effective interest rate method.

Trade creditors are obligations to pay for goods or services that have been acquired in the ordinary course of business from suppliers. Amounts payable are classified as current liabilities if payment is due within one year or less. If not, they are presented as non-current liabilities. Trade creditors are recognised initially at transaction price and subsequently measured at amortised cost using the effective interest method.

Financial liabilities are derecognised when the company’s contractual obligations expire or are discharged or cancelled.

Equity instruments
Equity instruments issued by the company are recorded at the fair value of cash or other resources received or receivable, net of direct issue costs. If payment is deferred and the time value of money is material, the initial measurement is on a present value basis. Dividends payable on equity instruments are recognised as liabilities once they are no longer at the discretion of the company.

Provisions

Provisions are recognised when the company has a present obligation (legal or constructive) as a result of a past event, it is probable that the company will be required to settle that obligation and a reliable estimate can be made of the amount of the obligation.

The amount recognised as a provision is the best estimate of the consideration required to settle the present obligation at the Balance Sheet date, taking into account the risks and uncertainties surrounding the obligation. Where a provision is measured using the cash flows estimated to settle the present obligation, its carrying amount is the present value of those cash flows (when the effect of the time value of money is material).

When some or all of the economic benefits required to settle a provision are expected to be recovered from a third party, a receivable is recognised as an asset if it is virtually certain that reimbursement will be received and the amount of the receivable can be measured reliably.

2. Critical accounting judgements and key sources of estimation uncertainty

In the application of the company’s accounting policies, the director is required to make judgements that have a significant impact on the amounts recognised. The following are the critical judgements that the director has made in the process of applying the company’s accounting policies and that have the most significant effect on the amounts recognised in the financial statements.

Useful economic lives of tangible assets:
The annual depreciation charge for the tangible assets are sensitive to changes in the estimated useful economic lives and residual values of the assets. They are amended when necessary to reflect current estimated, based on economic utilisation and the physical condition of the assets.

Revenue recognition:
Revenue arises from short-duration subsea engineering contracts, typically completed within one year and in most cases started and completed during the financial year. Revenue is recognised by reference to the stage of completion where work is ongoing at the reporting date. Judgement is required in determining the stage of completion and the costs required for those contracts that span the year end, including the assessment of contract costs incurred any any accruals or deferrals required for cut-off.

Going concern assumption:
The going concern is a judgement exercised by management (see note 1)

3. Employees

2025 2024
Number Number
Monthly average number of persons employed by the company during the year, including directors 8 9

4. Tangible assets

Plant and machinery etc. Total
£ £
Cost
At 01 January 2025 66,880 66,880
Additions 6,334 6,334
At 31 December 2025 73,214 73,214
Accumulated depreciation
At 01 January 2025 31,525 31,525
Charge for the financial year 18,196 18,196
At 31 December 2025 49,721 49,721
Net book value
At 31 December 2025 23,493 23,493
At 31 December 2024 35,355 35,355

5. Debtors

2025 2024
£ £
Trade debtors 0 1,242,679
Amounts owed by group undertakings (note 9) 702,042 110
Other debtors 1,563,036 1,342,067
2,265,078 2,584,856

6. Creditors: amounts falling due within one year

2025 2024
£ £
Trade creditors 162,785 2,581,977
Amounts owed to group undertakings (note 9) 1,448,552 3,846,720
Corporation tax 347,141 0
Other taxation and social security 18,353 16,682
Other creditors 113,625 161,426
2,090,456 6,606,805

Amounts owed to group undertakings represent intercompany balances arising in the normal course of business. The balances are unsecured, interest-free and repayable on demand.

7. Called-up share capital

2025 2024
£ £
Allotted, called-up and fully-paid
100,000 Ordinary shares of £ 1.00 each 100,000 100,000

8. Financial commitments

Commitments

2025 2024
£ £
Total future minimum lease payments under non-cancellable operating leases 1,500 2,700

9. Related party transactions

The company has availed of the exemption provided in FRS 102 Section 33 Related Party Disclosures not to disclose transactions entered into with fellow group companies that are wholly owned within the group of companies of which the company is a wholly owned member.

Transactions with related parties or connected persons

Amounts owed to related parties

2025 2024
£ £
Entities with control, joint control or significant influence over the company 1,176,501 1,579,959

10. Audit Opinion

The auditor's report on the accounts for the financial year ended 31 December 2025 was unqualified.

The audit report was signed by Louise Smith CA on behalf of Hall Morrice LLP.

11. Ultimate controlling party

Parent Company:

Mermaid Subsea Services (Thailand) Limited.
26/28-29, Orakarn Building, 9th Floor, Soi Chidlom, Ploenchit Road, Lumpinee, Pathumwan, Bangkok 10330, Thailand.

The ultimate controlling party and largest group to consolidate these financial statements is Thoresen Thai Agencies Public Company Limited. The registered office is 26/26-27 Orakarn Building, 8th Floor, Soi Chidlom, Ploenchit Road, Kwaeng Lumpinee, Khet Pathumwan, Bangkok 10330. Their financial statements are publicly available from this address.